Is there a built-in Python cache decorator that can store function return values?

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4

If you need more control, you can create a custom Python cache decorator:

def cached_property(func):
    attr_name = f""_{func.__name__}""

    @property
    def wrapper(self):
        if not hasattr(self, attr_name):
            setattr(self, attr_name, func(self))
        return getattr(self, attr_name)
    
    return wrapper

class Example:
    @cached_property
    def expensive_computation(self):
        print(""Computing value..."")
        return 42  # Simulate an expensive operation

This decorator stores the computed value as an instance attribute, preventing redundant computations.